Arthropods have ____ bodies.

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Multiple Choice

Arthropods have ____ bodies.

Explanation:
Arthropods have a segmented body plan. Their bodies are built from repeating units, often organized into regions such as a head, thorax, and abdomen, or into a cephalothorax and abdomen in some groups. This segmentation, together with a tough exoskeleton, underpins their versatility in movement and specialization of body regions. The other options describe body plans not typical of arthropods: radial or pentaradial symmetry is a feature of echinoderms like starfish, and an unsegmented body would lack the repeated body units that define arthropods. So the segmented body is the best fit.

Arthropods have a segmented body plan. Their bodies are built from repeating units, often organized into regions such as a head, thorax, and abdomen, or into a cephalothorax and abdomen in some groups. This segmentation, together with a tough exoskeleton, underpins their versatility in movement and specialization of body regions. The other options describe body plans not typical of arthropods: radial or pentaradial symmetry is a feature of echinoderms like starfish, and an unsegmented body would lack the repeated body units that define arthropods. So the segmented body is the best fit.

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